Welk getal ontbreekt t/m 40?

Aftrekken

Oefening 1
1.	29	-		=	21
2.	35	-		=	22
3.	39	-		=	12
4.	40	-		=	21
5.	40	-		=	1
6.	21	-		=	17
7.	20	-		=	10
8.	22	-		=	5
9.	17	-		=	5
10.	39	-		=	26

Oefening 2
1.	33	-		=	10
2.	35	-		=	14
3.	24	-		=	23
4.	36	-		=	30
5.	40	-		=	4
6.	36	-		=	14
7.	22	-		=	10
8.	40	-		=	35
9.	15	-		=	11
10.	33	-		=	16

Oefening 3
1.	40	-		=	31
2.	20	-		=	16
3.	34	-		=	22
4.	28	-		=	9
5.	25	-		=	18
6.	30	-		=	23
7.	4	-		=	3
8.	36	-		=	30
9.	40	-		=	14
10.	16	-		=	8

Oefening 4
1.	30	-		=	11
2.	17	-		=	1
3.	23	-		=	1
4.	15	-		=	3
5.	24	-		=	1
6.	39	-		=	11
7.	16	-		=	9
8.	38	-		=	18
9.	16	-		=	11
10.	20	-		=	1

Welk getal ontbreekt t/m 40?
| ANTWOORDEN

Aftrekken

Oefening 1
1.	29	-	8	=	21
2.	35	-	13	=	22
3.	39	-	27	=	12
4.	40	-	19	=	21
5.	40	-	39	=	1
6.	21	-	4	=	17
7.	20	-	10	=	10
8.	22	-	17	=	5
9.	17	-	12	=	5
10.	39	-	13	=	26

Oefening 2
1.	33	-	23	=	10
2.	35	-	21	=	14
3.	24	-	1	=	23
4.	36	-	6	=	30
5.	40	-	36	=	4
6.	36	-	22	=	14
7.	22	-	12	=	10
8.	40	-	5	=	35
9.	15	-	4	=	11
10.	33	-	17	=	16

Oefening 3
1.	40	-	9	=	31
2.	20	-	4	=	16
3.	34	-	12	=	22
4.	28	-	19	=	9
5.	25	-	7	=	18
6.	30	-	7	=	23
7.	4	-	1	=	3
8.	36	-	6	=	30
9.	40	-	26	=	14
10.	16	-	8	=	8

Oefening 4
1.	30	-	19	=	11
2.	17	-	16	=	1
3.	23	-	22	=	1
4.	15	-	12	=	3
5.	24	-	23	=	1
6.	39	-	28	=	11
7.	16	-	7	=	9
8.	38	-	20	=	18
9.	16	-	5	=	11
10.	20	-	19	=	1